Computer viruses: a high-tech disease
This work starts with a short history of computer viruses, and describes how a virus can take hold of a PC. Also includes information on the creation and removal of computer viruses plus several rudimentary programs that demonstrate some of the ways a virus infects a PC.
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1AAF 2nd User Program Abacus aoui assembly language BASIC batch file Beginners bytes free carrier program catalog cause CD21 INT changes Cohen COLOR A2,B:LOCATE command COMMAND.COM computer system computer viruses CP/M created damage danger DEBUG demo developed disk access DISKCOPY duiC EDLIN employees error message example filename functions GOSUB GOTO GW-BASIC hackers hard disk hardware infected program input installation int 21h interrupt keyboard loaded LOCATE mainframes manipulation task Marker byte memory memory-resident modified MS-DOS MS-DOS internal non-overwriting operating system password path personal computers possible prevent PRINT problems processor program code program is started propagation second user program SO2 eeo software houses source code spread subroutine system crash Turbo Pascal vector VIRDEM.COM virulent virus attack virus marker virus programs Viruses in assembly write